Type-writing machine.



'PATENTED JAN. 16, 1906. J. A. HAGBRSTROM.

TYPE WRITING MACHINE. APPLICATION FILED MAR.10, 1905.

WITNESSES; INVENTO/i ,4 TTOBNEYS UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application fil d March 10,1905. Serial No. 249,370.

To all whom, it may concern:

Be it known that 1, JOHN A. HAGERsTRoM,

a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Type -Writing Machines, of which the following is a full, clear, and exact description.

The purpose of the invention is to provide a'construction oftype-levers and a manner of pivoting them whereby each type lever or bar will have an extended bearing, insuring accuracy in printing action and stability in all positions, the bearings being so constructed that while extended the type bars or levers can be arranged the conventional distance apart, all striking at a common center.

A further purpose of the invention is-to sopivot the type bars or levers that their bearings can be quickly, conveniently, and positively adjusted to take up lost motion.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is'to be had to the accompany-- ing drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures. Figure 1 is a perspective view of a-portion of the support for the type bars and levers and sundry of the type-bars and their bearings. Fig. 2 is a sectional plan view of the arts shown in Fig. 1, thesection being taken orizontally through the lower portions ofthe type-levers. Fig. 3 is a vertical section taken practically on the line 3 3 of Fig. 2, the view being drawn upon an enlarged scale. Fig. 4 is a detail vertical section taken practically on the line 4 4 of Fig. 3, and Fig. 5 is a detail section taken substantially on the line 5 5 of Fig. 3.

A represents the supporting-plate for the type-bars B, and C the alining-rail against which the type-bars rest when in their vertical position or position of rest. The supporting-plate A is preferably provided with four rows of apertures 10, 11, 12, and 13, the first three named apertures being threaded and the aperture 13 plain, said latter aperture being adapted to receive pins 14. The apertures 10, 11, 12, and 13 are shown arran ed in radial rows.

T e apertures 10 are adapted to receive tap-screws 15, which extend a desired distance above the supporting-plate A, and the apertures 11 'at one side of the center of the plate A are adapted to receive screws 16, having tapering head-sections 16 which are a desired distance above the said supportingplate A, while the apertures 12 at the other side of the center of the said plate A are adapted to receive similar screws 17. The screws 15 are bearing-screws and the screws 16 and 17 adjusting-screws. A bearing; plate 18 is provided for each bearing-screw,

aving its inner end 18 upwardly curved, so as to extend beyond the inner, edge of the supporting-plate, as is shown in Figs. 1 and 2.

' the same side with a semicircular offset 20,

the said offset being located between the projections 19 and the curved inner ends of the bearing-plates. The bearing-plates 18 are placed radially upon the supporting-plate A adjacent to the rear of the apertures 10, 11, 12, and 13, and semicircular depressions in the bearing-plates formed by the offsets are each made to receive the head portion of a bearing-screw 15. The outer end portion of each bearing-plate is made to engage with the corresponding side of a pin 14. Thus an adjusting-screw 16 or 17, as the case may be, is placed in an aperture 11 or 12, so that its head will bear against the projection 19 of the bearing-plate to which said adjustingplate is assigned, as is shown in Figs. 1 and 2.

The type-bars Beach consist of a straight body-section 21, to the outer end of which the type 21 is secured, and a base-section which comprises an arched member 22 and foot members 23, which foot members extend diagonally in opposite directions from the ends of the arched member, and the outer ends of the foot members are given a straight bend, forming toe extensions 241-. When the type-bars B are in position, their arched members 22 are at right angles to the supporting-plate A, as is shown in Fig. 1, and

- plates 18 at one side of the center of the su portingplate C and the left-hand side of t e The typebars are pivoted in the following manner: The toe extensions 24'are provided with conical indentations 25, and the upwardly-curved inner ends 18 of the bearingplates 18 have conical projections 26, which enter the saidindentations, as is shown in Fig. 5, so that should lost motion occur at the pivotal connection, of each type-bar with its bearing a s eedy and effective remedy is found by simpl; lowering one or the other of the adjusting-screws 16 or l7 used in connection with the articular type-bar, thereby forcin one ofthe bearing-plates 18in direction oi its mate, and thus tightening the con- 0 toe extensions of the type-bars. In the arrangement of the bearing-plate two of them must necessarily come together nection between the bearin -plates and the atone point in a circular supporting-plate A, as' is shown at C in Figs. 1 and 2, and in such position of the bearing-plates the offset portions 20 of both bearing-plates 18 engage with one 0st or screw 15, but at opposite sides, and ikewise engage'with opposite sides of one pin 14;, which is in alinement with said post or screw 15. But two adjusting-screws 16 or 17 arev employed, engaging with the outer faces of the bearing plates 18, one .a'djusting-screw beinglocated' in the series of apertures 11 and the other in the series of apertures '12.

The two series of apertures 11 and 12 are employed because in practice it has been found best to have the adjustin -screws en-.

gage the right-hand sides of-t e bearingearin -plates 18 at the other sideof the center of t e said supporting-plate.

Under the above-described construction it is obvious that an extended bearing is provided for each type-bar, rendering said bars more accurate inaction and giving them more solidity and that any lost motion may be speedily and conveniently'takenup.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In type-writing machines, a pair of independent bearings, independent guidesupports and adjusting devices for each bearing, and a type-bar having an arched lower exarched member and foot members extending horizontally in opposite directions from the ends of the arched member, which foot members are pivoted in said bearings.

3. In type-writing machines, a support,

bearing-plates in pairs located onsaid support, adjusting devices for the bearingplate, a type-bar having an arched lower 'member radially disposed with reference tothe support, horizontal oppositely-disposed foot members extending from the ends of thearched member, toe extensions from the foot members, and pivotal connections between the bearing-plates and the toe extensions of the type-bar. v 4. In type-writing machines, a supportingplate, bearin -posts and pins carried bythe supporting-plate and arranged in transverse rows, bearing-plates in palrs located upon the supporting-plate, said bearingplates having semicircular offsets for engagement with the bearing-posts, their inner ends being upwardly curved beyond the inner edge of the supporting-plate, the outer ends of said bearing-plates having engagement with said pins, said bearing-plates being also provided with projections from one side face and with conical offsets at their curved inner ends, and type-bars having arched lower members radially disposed to the supporting-plate,; and oppositely-extending horizontal foot members at the ends of the arched members, each foot member having .a toe extension provided with a depression to receive the olisets from the inner ends ofthe bearing plates, and adjusting-screws engaging with the projections on the bearing-plates, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribin witnesses.

OHN A. HAGERSTROM. l/Vitnesses: I i

Gno. A. SwENsoN, CARL Mon. 

